Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 177 insertions, 0 deletions

diff --git a/gcc-4.9/libjava/include/java-stack.h b/gcc-4.9/libjava/include/java-stack.h
new file mode 100644
index 000000000..40ce825b0
--- /dev/null
+++ b/gcc-4.9/libjava/include/java-stack.h
@@ -0,0 +1,177 @@
+// java-stack.h - Definitions for unwinding & inspecting the call stack.
+
+/* Copyright (C) 2005, 2006  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#ifndef __JV_STACKTRACE_H__
+#define __JV_STACKTRACE_H__
+
+#include <stdlib.h>
+#include <unwind.h>
+
+#include <gcj/cni.h>
+#include <gcj/javaprims.h>
+
+#include <java-interp.h>
+
+#include <java/lang/Class.h>
+#include <java/lang/StackTraceElement.h>
+#include <java/lang/Throwable.h>
+#include <java/lang/Thread.h>
+#include <java/util/IdentityHashMap.h>
+
+#include <gnu/gcj/runtime/NameFinder.h>
+
+using namespace gnu::gcj::runtime;
+using namespace java::lang;
+
+extern "Java"
+{
+  namespace gnu
+  {
+    namespace classpath
+    {
+        class VMStackWalker;
+    }
+  }
+}
+
+#ifdef INTERPRETER
+struct _Jv_InterpFrameInfo
+{
+  _Jv_InterpMethod *meth;
+  pc_t pc;
+};
+#endif
+
+struct _Jv_StackFrame
+{
+  _Jv_FrameType type;   /* Native or interpreted.  */
+  union {
+#ifdef INTERPRETER
+    _Jv_InterpFrameInfo interp;
+#endif
+    struct {
+      jclass proxyClass;
+      _Jv_Method *proxyMethod;
+    };
+    struct {
+      void *ip;
+      void *start_ip;
+    };
+  };
+  jclass klass;
+  _Jv_Method *meth;
+};
+
+struct _Jv_UnwindState;
+typedef _Unwind_Reason_Code (*_Jv_TraceFn) (_Jv_UnwindState *);
+
+struct _Jv_UnwindState
+{
+  jint length;                   // length of FRAMES
+  jint pos;                      // current position in FRAMES
+  _Jv_StackFrame *frames;        // array of stack frame data to be filled.
+#ifdef INTERPRETER
+  _Jv_InterpFrame *interp_frame; // current frame in the interpreter stack.
+#endif
+  _Jv_TraceFn trace_function;    // function to call back after each frame
+  				 // is enumerated. May be NULL.
+  void *trace_data;		 // additional state data for trace_function.
+  
+  _Jv_UnwindState (jint ln)
+    {
+      length = ln;
+      pos = 0;
+      frames = NULL;
+#ifdef INTERPRETER
+      Thread *thread = Thread::currentThread();
+      // Check for NULL currentThread(), in case an exception is created 
+      // very early during the runtime startup.
+      if (thread)
+	interp_frame = (_Jv_InterpFrame *) thread->interp_frame;
+      else
+	interp_frame = NULL;
+#endif
+      trace_function = NULL;
+      trace_data = NULL;
+    }
+};
+
+class _Jv_StackTrace
+{
+private:
+  int length;
+  _Jv_StackFrame frames[];
+
+  static java::util::IdentityHashMap *ncodeMap;
+  static void UpdateNCodeMap ();
+  static jclass ClassForFrame (_Jv_StackFrame *frame);
+  static void FillInFrameInfo (_Jv_StackFrame *frame);
+  static void getLineNumberForFrame(_Jv_StackFrame *frame, NameFinder *finder, 
+				    jstring *sourceFileName, jint *lineNum,
+				    jstring *methodName);
+  
+  static _Unwind_Reason_Code UnwindTraceFn (struct _Unwind_Context *context, 
+    void *state_ptr);
+    
+  static _Unwind_Reason_Code calling_class_trace_fn (_Jv_UnwindState *state);
+  static _Unwind_Reason_Code non_system_trace_fn (_Jv_UnwindState *state);
+  static _Unwind_Reason_Code accesscontrol_trace_fn (_Jv_UnwindState *state);
+  static _Unwind_Reason_Code stackwalker_trace_fn (_Jv_UnwindState *state);
+  static _Unwind_Reason_Code stackwalker_nnl_trace_fn (_Jv_UnwindState *state);
+
+public:
+  static _Jv_StackTrace *GetStackTrace (void);
+  static JArray< ::java::lang::StackTraceElement *>*
+    GetStackTraceElements (_Jv_StackTrace *trace, 
+    java::lang::Throwable *throwable);
+  static jclass GetCallingClass (jclass);
+  static void GetCallerInfo (jclass checkClass, jclass *, _Jv_Method **);
+  static ClassLoader *GetFirstNonSystemClassLoader (void);
+  static jobjectArray GetAccessControlStack ();
+  static JArray<jclass> *GetStackWalkerStack ();
+  static jclass GetStackWalkerCallingClass ();
+  static ClassLoader *GetStackWalkerFirstNonNullLoader ();
+
+  friend jclass _Jv_GetMethodDeclaringClass (jmethodID);
+  friend class gnu::classpath::VMStackWalker;
+};
+
+// Information about a given address.
+struct _Jv_AddrInfo
+{
+  // File name of the defining module.
+  const char *file_name;
+
+  // Base address of the loaded module.
+  void *base;
+
+  // Name of the nearest symbol.
+  const char *sym_name;
+
+  // Address of the nearest symbol.
+  void *sym_addr;
+
+  ~_Jv_AddrInfo (void)
+    {
+      // On systems with a real dladdr(), the file and symbol names given by
+      // _Jv_platform_dladdr() are not dynamically allocated.  On Windows,
+      // they are.
+
+#ifdef WIN32
+      if (file_name)
+        free ((void *)file_name);
+
+      if (sym_name)
+        free ((void *)sym_name);
+#endif /* WIN32 */
+    }
+};
+
+#endif /* __JV_STACKTRACE_H__ */